Separate Prettier and ESLint according to best practices (#9565)

* Separate Prettier and ESLint according to best practices

- Create standalone .prettierrc configuration file
- Remove eslint-plugin-prettier integration from ESLint config
- Replace with eslint-config-prettier to disable conflicting rules
- Remove eslint-plugin-prettier dependency
- Add dedicated format and format:check scripts
- Update lint-staged to run Prettier and ESLint separately
- Format entire codebase with new Prettier configuration

This follows the recommended approach from Prettier documentation:
https://prettier.io/docs/integrating-with-linters#notes

* Remove test comment

---------

Co-authored-by: codegen-sh[bot] <131295404+codegen-sh[bot]@users.noreply.github.com>

docs/CODE_OF_CONDUCT.md

@@ -8,19 +8,19 @@ In the interest of fostering an open and welcoming environment, we as contributo
 
 Examples of behavior that contributes to creating a positive environment include:
 
-* Using welcoming and inclusive language
-* Being respectful of differing viewpoints and experiences
-* Gracefully accepting constructive criticism
-* Focusing on what is best for the community
-* Showing empathy towards other community members
+- Using welcoming and inclusive language
+- Being respectful of differing viewpoints and experiences
+- Gracefully accepting constructive criticism
+- Focusing on what is best for the community
+- Showing empathy towards other community members
 
 Examples of unacceptable behavior by participants include:
 
-* The use of sexualized language or imagery and unwelcome sexual attention or advances
-* Trolling, insulting/derogatory comments, and personal or political attacks
-* Public or private harassment
-* Publishing others' private information, such as a physical or electronic address, without explicit permission
-* Other conduct which could reasonably be considered inappropriate in a professional setting
+- The use of sexualized language or imagery and unwelcome sexual attention or advances
+- Trolling, insulting/derogatory comments, and personal or political attacks
+- Public or private harassment
+- Publishing others' private information, such as a physical or electronic address, without explicit permission
+- Other conduct which could reasonably be considered inappropriate in a professional setting
 
 ## Our Responsibilities
 

docs/SERVICES.md

@@ -32,14 +32,14 @@ At least one worker process is required to process the [queues](../server/queues
 
 ## Collaboration
 
-The collaboration server coordinates all realtime editing and updating of documents, 
+The collaboration server coordinates all realtime editing and updating of documents,
 it can be ran on the same box as the web server or separately.
 
 ```bash
 yarn start --services=collaboration
 ```
 
-If the collaboration service is hosted on a separate domain then the `COLLABORATION_URL` 
-env must be set to the publicly accessible URL. For example, if the app is hosted at 
+If the collaboration service is hosted on a separate domain then the `COLLABORATION_URL`
+env must be set to the publicly accessible URL. For example, if the app is hosted at
 `https://docs.example.com` you may use something like:
 `COLLABORATION_URL=wss://docs-collaboration.example.com`.

docs/TRANSLATION.md

@@ -1,6 +1,6 @@
 # Translation
 
-Outline is localized through community contributions. The text in Outline's user interface is in American English by default, we're very thankful for all help that the community provides bringing the app to different languages. 
+Outline is localized through community contributions. The text in Outline's user interface is in American English by default, we're very thankful for all help that the community provides bringing the app to different languages.
 
 ## Externalizing strings
 
@@ -17,7 +17,7 @@ To manage the translation process we use [CrowdIn](https://translate.getoutline.
 You'll need to create a free account to use CrowdIn. Once you have joined, you can provide translations by following these steps:
 
 1. Select the language for which you want to contribute (or vote for) a translation (below the language you can see the progress of the translation)
-![CrowdIn UI](https://i.imgur.com/AkbDY60.png)
+   ![CrowdIn UI](https://i.imgur.com/AkbDY60.png)
 
 2. Please choose the translation.json file from your desired language
 
@@ -31,4 +31,4 @@ If you are interested in becoming a proof reader, please contact one of the proj
 
 ## Release
 
-Updated translations are automatically PR'd against the codebase by a bot and will be merged regularly so that new translations appear in the next release of Outline.
+Updated translations are automatically PR'd against the codebase by a bot and will be merged regularly so that new translations appear in the next release of Outline.